-/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <errno.h>
+#include <endian.h>
#include <unistd.h>
#include <sysdep.h>
#include <sys/syscall.h>
-#include "kernel-features.h"
-
-#ifdef __NR_ftruncate64
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-/* The variable is shared between all wrappers around *truncate64 calls. */
-extern int have_no_truncate64;
-#endif
-
-extern int __syscall_ftruncate64 (int fd, int high_length, int low_length);
-
-
-/* Truncate the file FD refers to to LENGTH bytes. */
+/* Truncate the file referenced by FD to LENGTH bytes. */
int
-ftruncate64 (fd, length)
- int fd;
- off64_t length;
+__ftruncate64 (int fd, off64_t length)
{
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
- if (! have_no_truncate64)
-#endif
- {
- unsigned int low = length & 0xffffffff;
- unsigned int high = length >> 32;
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
- int saved_errno = errno;
-#endif
- int result = INLINE_SYSCALL (ftruncate64, 3, fd, low, high);
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
- if (result != -1 || errno != ENOSYS)
-#endif
- return result;
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
- __set_errno (saved_errno);
- have_no_truncate64 = 1;
-#endif
- }
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
- if ((off_t) length != length)
- {
- __set_errno (EINVAL);
- return -1;
- }
- return __ftruncate (fd, (off_t) length);
-#endif
+ unsigned int low = length & 0xffffffff;
+ unsigned int high = length >> 32;
+ int result = INLINE_SYSCALL (ftruncate64, 3, fd,
+ __LONG_LONG_PAIR (high, low));
+ return result;
}
-
-#else
-/* Use the generic implementation. */
-# include <sysdeps/generic/ftruncate64.c>
-#endif
+weak_alias (__ftruncate64, ftruncate64)